Union County Falcon Cam
Conserve Wildlife Foundation is partnering with Union County on the new Falcon Cam located on the roof of the County Courthouse in downtown Elizabeth, New Jersey.
“This Falcon Cam will provide an enriching experience for County residents of all ages, and for online visitors from all over the world."
While everything is quiet in Elizabeth, we're busy conducting nest checks for hatching throughout the state. The overall effects of the Nor'Easter that hit last weekened are still unknown. One falcon nest on an osprey platform failed. The eggs started to hatch only a couple of days before the storm, and when falcons nest in the open on ledges of cliffs and buildings, then their young are much more vulnerable to severe weather. Historically speaking, Mother's Day storms have flooded out nests along the Palisades for years now. As we get more and more severe storms with heavy rain in mid-late May, they increase the likelihood of failure at natural nest sites.
In addition, we try to visit nests shortly after hatching to treat the young for a parasitic wingless fly that can kill hatchling falcons if left untreated. Pictured are 5-7 day old falcons at a nest site in Ocean County that were treated for the parasitic fly yesterday. They were pretty loaded with the flies and we are hopeful that our efforts to treat them will result in a 100% fledge rate for this nest!
Well, we're past the window for when the previous females eggs would have hatched. Despite the fact that they're addled, 91/BA and her mate will continue to incubate them until her own hatch during the last week of May. While they are getting a later start than many other falcons throughout New Jersey (most nests already have young or are hatching), their chances of successfully raising young this year looks quite good.
We're on hatch watch for the two eggs laid by 91/BA's predecessor. We can ID one of those eggs as the very light and dark colored eggs. Falcon eggs hatch in the order they are laid and I believe the darkest was laid first. We are still not sure if the eggs are viable and if they don't hatch before the weekend, then they it's likely that they will never hatch. Unhatched eggs are collected at falcon nests throughout New Jersey and the contents can be analyzed for contaminants like PCBs, heavy metals, DDT/DDE, and brominated flame retardants, which can have detrimental effects on peregrine falcon health and reproduction. Despite having samples from a wide variety of nest sites throughout various regions of the state, the funding to pay for such analysis is expensive and has not been performed in decades. While we know that the level of these potentially harmful toxins is not high enough to cause reproductive failure (as it was with DDT in the 1950s and 60s), it is unknown some more new age pollutants (like flame retardants) effect the reproductive health of peregrines.
If the two eggs don't hatch then 91/BA will likely continue to incubate them with the others until they hatch in another 3 weeks.
Right on Schedule. This morning, 91/BA laid another egg. She's getting right down to business. Much more than the laid back female 41/AX who nests atop 101 Hudson St. in Jersey City... If 91/BA lays another egg then we'll have a super full clutch of 6 eggs (someone call Guinness Book of World Records!!!).
As you can see, things are getting a bit interesting in Elizabeth. The new female, who is just barely old enough to breed, has laid her first two eggs. Now she is incubating both her rivals eggs and her own. The first two eggs were laid on March 22 and March 24 and incubation began around March 28. Typically falcons incubate for 32 days, but with some of the gaps in steady incubation that could push hatching till early next week, but either way, we will be watching for hatching starting on April 29, if the eggs survived... If they don't hatch before May 5-6 then the chances of them hatching diminish.
The new eggs just complicate things even more. If just one of her rivals eggs hatches, it puts her own eggs in serious jeopardy of survival. Her efforts to incubate would slow as the young get older as her instincts would force her to care for your rivals young over her own. All of this depends on whether or not the eggs hatch. For that, only time will tell!
Not much has changed since our last entry. The male seems committed to make sure that his brood survives, despite loosing his previous mate. The pair has been seen performing courtship displays, including bowing "e-chup" calls. The new female, 91/BA has even come into the nest and toyed with the idea of incubating the eggs but has yet to claim them as hers.
What we've witnessed over the past 48 hours has been the true, unfiltered behavior of nesting peregrine falcons and evolution at work. Natural selection is the process of evolution where only the fittest survive to produce offspring. As it turns out, 91/BA "Cadence" is more fit than the resident female. We are in communication with employees of Union County, who are watching for the possibility of finding the injured resident female. If she is found and brought to a local rehabilitator then we will hear about it.
It will be interesting to watch and see how this season unfolds. With the resident female being defeated by 91/BA, the male is still trying to ensure the survival of his (and her) offspring. However, he will need to eat, so he will need to leave the eggs to forage. If the eggs are not kept warm, then the embryos will fail to develop. We're doubtful that 91/BA would incubate another birds eggs, but nothing is certain at this point. Either way, he will need to develop his relationship with her (the new female) and the chances of these eggs hatching is slim. Only time will tell what the ultimate outcome would be.
The fate of the resident female remains uncertain. The pair has fought since late February to defend their territory against Cadence, the relentless female from Rochester, NY, who today appears in and around the nest while the male continues to incubate the eggs. At two years old, Cadence is young to lay eggs of her own although it is possible. Only time will tell if she will adopt the nest with the male, and how the two will interact as incubation of the two eggs has already begun.
April 4 (Contd.)
The 2 year old intruding female 91/BA, named Cadence from Rochester, NY was spotted again at the nest on top of the Union County Courthouse. A tangle above the nest between the two female's did not help the resident female who already had an injured (left) wing. These territorial battles can be extensive and leave all involved exhausted. Kathy Clark, ENSP Zoologist was watching and at one point she saw 91/BA hit the resident female at around 5:30pm. After that, the resident female was not seen again.
Incubation has begun and the battles seem to have ended, with the resident (unbanded) female successfully defending her eyrie (nest), despite gaining some new battle scars. Viewers have watched the male perform the majority of incubation duties, which is usually done by the female. She's obviously been under a great deal of stress from defending her eyrie and should settle down more on the eggs as they get back to their normal routine. Peregrines begin incubating after they lay a full clutch. With there being only two eggs (most lay between 3-4 eggs) this is likely due to stress from the battles this spring. The second egg should have been laid on March 26 since peregrines typically lay an egg every other day (second egg was laid in the evening of March 24). We believe that she could have "dropped" an egg, which means that she could have laid the egg during a mid-air battle with the intruding female. A reduced clutch is not a bad thing and the peregrine falcon population has been quite stable over the past several years. Nests on towers and buildings continue to be the "backbone" for the continued stability for the statewide population, while nests on natural cliff sites continue to be much less stable due to their inherent nature of being susceptible to predators and weather.
Hatching should begin during the last week of April.
Female intruder returns to nest and a battle ensues with footage of the female peregrine falcons locking talons and falling from the sky. Both resident male and female peregrine falcons are viewed on the livestream later that afternoon. Intruder has been successfully chased off for the time being.
Periodic sightings of intruder. Resident male and female take turns defending nest and incubating eggs.
The resident peregrine falcons defends nest against intruding female and sustains injuries to her chest and left wing. She lays 2nd egg following this altercation.
The resident female lays the first egg.
Possible juvenile red-tail hawk spotted near the nest, resident pair attempted to chase hawk away.
Late February 2017
A second female peregrine falcon is first spotted near the nest. We now know that this is Cadence (91/BA) from Rochester NY.
Pair continues to strengthen their bond, courtship behavior caught on video.
Below was developed to allow Union County Falcon Cam viewers to post comments, questions, and photos about the Union County Courthouse falcons. Please keep any questions or comments on this page related to this particular nest and falcons in New Jersey. Any other posts will be moderated appropriately. Thank you for your participation!
A pair first attempted to build a nest on the roof of the County Courthouse in 2005, but windy conditions were an obstacle. In 2006 County workers installed a repurposed dog house to provide a wind shield, acting on the guidance of wildlife experts with the New Jersey Department of Environmental Protection. Every year until 2015, the same nesting pair has raised chicks in the doghouse since then.
In 2015, this nesting pair had four eggs, beating the statewide average of 2.25 young per active nest. They also hatched all four to achieve a 100 percent success rate, well above the average rate of 71 percent.
However, earlier this year in 2016 a new female took up residence in the nest. Leg bands indicate that she was born in a nest located at Throgs Neck Bridge in New York City in 2010.
Conserve Wildlife Foundation partners with Union County and the NJ DEP on a Peregrine Falcon banding program. Thanks to the partnership, offspring from the County Courthouse pair have been observed around the tri-state region, where they have raised chicks of their own.
The new Falcon Cam live stream includes two cameras. One provides a view of the nest interior and an infrared video image for night time viewing.
A second camera enables observers to track the falcons’ behavior while perched outside of the nest. An audio feed will also be available later this year. With the Falcon Cam, Union County becomes one of only two places in New Jersey with a live peregrine falcon web link. The other web cam is located at a nest in Jersey City and is managed by the biologists of Conserve Wildlife Foundation.
CWF's new partnership stems from the long legacy of our Jersey City Falcon Cam. After 16 seasons of dedicated research, there has been much uncertainty within the past two years. With multiple males coming in to use the eyrie - it has not been a productive time.
However, we are not giving up! CWF hopes that our new partnership in Union County will in turn continue to support our efforts in Jersey City.
CWF’s Soaring with STEM program educates children about New Jersey’s unique natural resources and the rare wildlife that shares our environment using the Union County Courthouse live falcon web cams as the primary technological learning tool. Through interactive and engaging classroom and assembly presentations, our experienced educators bring wildlife into your school. Students are fascinated to discover that these raptors nest and raise young each year right in their own backyards! Teachers receive structured lessons and interactive activities to address the Next Generation Science Standards for grades 3-5. Learning about their wildlife neighbors helps children to connect to their community and teaches children to consider how their everyday actions impact the natural world around them. A special thanks to Phillips 66 for their sponsorship of the Union County Educational programs utilizing the Union County Courthouse Falcon Cam.
Please contact Stephanie DAlessio, CWF Director of Education, for more information on this and other educational programming options.
CWF is offering individual and corporate sponsorships of public outreach and environmental education in Union County centered on the Falcon Cam. CWF seeks to provide educational programs, lesson plans, curriculum development, and educational field trips for schools within Union County.
For more information about CWF's individual and corporate sponsorships, contact Liz Silvernail, CWF Director of Development or use the online form.
Conserve Wildlife Foundation Web Cam Series
As of January 2017, CWF is proud to feature five separate wildlife webcam series on our website - Eagle Cam, Osprey Cam, Bat Cam, Jersey City Falcon Cam, and Union City Falcon Cam. All of which are accessible to view at this time!
Falcon Cam Sponsoring Contact:
Liz Silvernail, CWF Director of Development: Email
NJ Falcon Project Contact:
Ben Wurst, CWF Habitat Program Manager: Email
Falcon Cam Education Programs Contact:
Stephanie DAlessio, CWF Director of Education: Email
Union County Falcon Cam Navigation
Want to become a sponsor?
CWF is offering individual and corporate sponsorships of public outreach and environmental education in Union County centered on the Falcon Cam. Contact Liz Silvernail, CWF Director of Development, for more information!
Introduce Peregrine falcons to your students today! We offer lesson plans to help your students to learn about birds of prey, predator/prey relationships, and much more!